Not that I know of; on the contrary, it's become the one source that every other book or comic about the Stargazer has treated as gospel. Although it has been contradicted in a couple of small ways by later canon. For one thing, it shows Jack Crusher dying during a repair operation in space, but a later TNG episode established that Jack died on an "away mission," although no other details were given (so it's possible to reconcile it if you squint a little). For another, it was written based on the assumption of early TNG that holodecks were a fairly recent innovation, because there's a scene where Worf is showing off the Enterprise's holodeck to the visiting Starfleet officers and explaining how it works, and they're all amazed as if they've never seen one before. It was later established that holodecks were an earlier and more commonplace invention, so that scene feels rather awkward today.

But those are no worse than the inconsistencies between earlier and later canon episodes when it comes to things like the holodeck or character backstories or whatever. For that reason, and because of how influential Reunion has become on subsequent Trek Lit, I find it's best just to gloss over the minor continuity issues and accept the bulk of the work. (I just skip over the "Here's how a holodeck works" sequence.)

Hey, long time lurker, don't respond much, but I was wondering if anyone could clarify some of the dates (in modern years and months) the current books take place. I know some books are really good at putting the month and year and some don't, I like to have that information, helps my spatial awareness. Thanks!

Yeah, I know Plagues of Night has the dates and some of the other novels do as well. But going back to roughly post-Nemesis I was wondering if anyone, or any site, had the listings of the year and months that books took place. I really am spatially challenged and it is a handy resource when I can see that year and month, etc.